Patent US6144757A successfully refreshed from Google Patents.
US6144757A
Expired / Lapsed
US
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System and method for identifying an organism
Assignee: NEC Corp
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Filing: 1998-02-26
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Granted: 2000-11-07
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Expires: 2018-02-26
Abstract
Abstract An organism identification system that can identify whether or not a fingerprint image input object is a living body at a fingerprint collating time. A finger collator slides his finger at the time of inputting a fingerprint image. Meanwhile the finger is contact with bioelectric potential lead-out portions and a bioelectric potential grounding portion. Sliding of the finger causes a variation in the muscle potential of the finger. The bioelectric potential lead-out portions and the bioelectric potential grounding portion output electric signals corresponding to the potential variation to a bioelectric signal amplification section. The bioelectric signal amplification section amplifies the difference between electric signals from the bioelectric potential lead-out portions while the bioelectric potential grounding portion is at the ground potential. A signal peculiar to a living body is generated by sliding the finger. When an illegal person slides a replica, a variationless signal occurs. The bioelectric signal identification section identifies a living body based on differences in the signals.
Inventors
- 👤 Shinichi Fukuzumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:14
CPC Classifications
G; G06; G06V; G06V40/00; G06V40/10; G06V40/12; G06V40/1382; G06V40/1394
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
74 words
An organism identification system, comprising: a finger rest having a support surface on which an object slides when a fingerprint image is to be taken; at least one sensor, for measuring an electric signal produced by said object as said object slides on said finger rest; and an identification system which identifies whether or not said object corresponds to a living body based on said electric signals measured from said at least one sensor.
Claim 2
Dependent Claim
74 words
An organism identification system, comprising: a finger rest having a support surface on which an object slides when a fingerprint image is to be taken; at least one sensor, for measuring an electric signal produced by said object as said object slides on said finger rest; and an identification system which identifies whether or not said object corresponds to a living body based on said electric signals measured from said at least one sensor.
Claim 3
Dependent Claim
19 words
The organism identification system of claim 1, wherein said at least one sensor is fixed on said finger rest.
Claim 4
Dependent Claim
21 words
The organism identification system of claim 1 wherein said at least one sensor comprises a plurality of bioelectric potential lead-out portions.
Claim 5
Dependent Claim
116 words
An organism identification system, comprising: a finger rest having a support surface on which an object slides when a fingerprint image is to be taken; at least one sensor for measuring an electric signal produced from the object as said object slides on said finger rest; a finger slider which slides according to movement of said object, said finger slider being in contact with said object as said object slides on said finger rest; an amplifier producing a difference electric signal between electric signals from said at least one sensor; and an identification system which identifies whether or not said object corresponds to a living body based on the difference electric signal derived from said amplifier.
Claim 6
Dependent Claim
116 words
An organism identification system, comprising: a finger rest having a support surface on which an object slides when a fingerprint image is to be taken; at least one sensor for measuring an electric signal produced from the object as said object slides on said finger rest; a finger slider which slides according to movement of said object, said finger slider being in contact with said object as said object slides on said finger rest; an amplifier producing a difference electric signal between electric signals from said at least one sensor; and an identification system which identifies whether or not said object corresponds to a living body based on the difference electric signal derived from said amplifier.
Claim 7
Dependent Claim
18 words
The organism identification system of claim 4, wherein all of said sensors are fixed on said finger rest.
Claim 8
Dependent Claim
31 words
The organism identification system of claim 4, wherein some of said sensors are fixed on said finger rest and wherein any other of said sensors are fixed on said finger slider.
Claim 9
Dependent Claim
21 words
The organism identification system of claim 4 wherein said at least one sensor comprises a plurality of bioelectric potential lead-out portions.
Claim 10
Dependent Claim
56 words
An organism identification method comprising the steps of: sliding an object on a surface of a finger rest at the time of inputting a fingerprint image; measuring electric signals produced by said object sliding on said finger rest; and identifying whether or not said object corresponds to a living body based on said measured electric signals.
Claim 11
Dependent Claim
56 words
An organism identification method comprising the steps of: sliding an object on a surface of a finger rest at the time of inputting a fingerprint image; measuring electric signals produced by said object sliding on said finger rest; and identifying whether or not said object corresponds to a living body based on said measured electric signals.
Claim 12
Dependent Claim
189 words
An organism identification system comprising: a finger rest having a support surface on which an object slides when a fingerprint image is to be taken; at least one sensor for measuring an electric signal produced from the object as said object slides on said finger rest; a finger slider which slides according to movement of said object, said finger slider being in contact with said object as said object slides on said finger rest; an amplifier producing a difference electric signal between electric signals from said at least one sensor; an identification system which identifies whether or not said object corresponds to a living body based on the difference electric signal derived from said amplifier; and a ground electrode fixture fixed on said finger slider so as to confront said finger rest, a distance between an upper surface of said finger rest and said ground electrode fixture nearly corresponding to a height of a finger; and a grounding portion fixed on said ground electrode fixture; wherein some of said sensors are fixed on said finger rest; and wherein any other of said sensors are fixed on said finger slider.
Claim 13
Dependent Claim
189 words
An organism identification system comprising: a finger rest having a support surface on which an object slides when a fingerprint image is to be taken; at least one sensor for measuring an electric signal produced from the object as said object slides on said finger rest; a finger slider which slides according to movement of said object, said finger slider being in contact with said object as said object slides on said finger rest; an amplifier producing a difference electric signal between electric signals from said at least one sensor; an identification system which identifies whether or not said object corresponds to a living body based on the difference electric signal derived from said amplifier; and a ground electrode fixture fixed on said finger slider so as to confront said finger rest, a distance between an upper surface of said finger rest and said ground electrode fixture nearly corresponding to a height of a finger; and a grounding portion fixed on said ground electrode fixture; wherein some of said sensors are fixed on said finger rest; and wherein any other of said sensors are fixed on said finger slider.
Claim 14
Dependent Claim
18 words
The organism identification system of claim 9, wherein all of said sensors are fixed on said finger rest.
Claim 15
Independent Claim
54 words
A system for detecting whether an object is a living finger, said system comprising: a finger rest; at least one detector which measures electric signals generated by said object as said object is moved across said finger rest; and a processor which determines, based upon said signals, whether said object is a living finger.
Claim 16
Independent Claim
54 words
A system for detecting whether an object is a living finger, said system comprising: a finger rest; at least one detector which measures electric signals generated by said object as said object is moved across said finger rest; and a processor which determines, based upon said signals, whether said object is a living finger.
Claim 17
Dependent Claim
20 words
The system as claimed in claim 11, wherein said at least one detector comprises a plurality of bioelectric lead-out portions.
Claim 18
Dependent Claim
17 words
The system as claimed in claim 11, further comprising a grounding portion disposed on said finger rest.
Claim 19
Dependent Claim
27 words
The system as claimed in claim 11, further comprising a finger slider which maintains contact with said object as said object is moved across said finger rest.
Claim 20
Dependent Claim
39 words
The system as claimed in claim 11, further comprising a fingerprint detector which receives a fingerprint image, wherein said processor determines whether said object is a living finger when said fingerprint image is being received by said fingerprint detector.
Claim 21
Dependent Claim
53 words
The system as claimed in claim 15, wherein said processor comprises: an amplifier which amplifiers said electric signals thereby producing amplified signals; a calculator which produces characteristics of said amplified signals while said fingerprint image is received; and an identifier which identifies whether said object is a living finger based on said characteristics.
Claim 22
Independent Claim
43 words
A method of determining whether an object is a living finger, said method comprising: measuring electric signals generated by said object as said object is moved across a finger rest; and determining, based upon said signals, whether said object is a living finger.
Claim 23
Independent Claim
43 words
A method of determining whether an object is a living finger, said method comprising: measuring electric signals generated by said object as said object is moved across a finger rest; and determining, based upon said signals, whether said object is a living finger.
Claim 24
Dependent Claim
21 words
The method as claimed in claim 17, wherein said electric signals are measured using a plurality of bioelectric potential lead-out portions.
Claim 25
Dependent Claim
17 words
The method as claimed in claim 17, further comprising providing a grounding portion on said finger rest.
Claim 26
Dependent Claim
33 words
The method as claimed in claim 17, further comprising: providing a finger slider in contact with said object; and maintaining contact between said finger slider and said object during said step of moving.
Claim 27
Dependent Claim
23 words
The method as claimed in claim 17, further comprising: receiving a fingerprint image, wherein said step of determining follows said step of receiving.
Claim 28
Dependent Claim
47 words
The method as claimed in claim 21, wherein said step of determining comprises the following: amplifying said electric signals thereby producing amplified signals; calculating characteristics of said amplified signals after said step of receiving; and identifying whether said object is a living finger based upon said characteristics.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-11-07 | 2004-05-08 | 2004-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-11-07 | 2008-05-08 | 2008-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-11-07 | 2012-05-08 | 2012-11-07 | $7700.00 | Window Closed / Lapsed |